Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage?
Nothofagus antarctica, is the most important species of the silvopastoral systems of southern Patagonia. However, there is limited information on the ecophysiological response mechanisms of seedlings for survival under different resource availability regimes, and whether such processes may differ be...
| Autores principales: | , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
2018
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| Materias: | |
| Acceso en línea: | https://link.springer.com/article/10.1007/s10457-017-0167-5 http://hdl.handle.net/20.500.12123/2343 https://doi.org/10.1007/s10457-017-0167-5 |
| _version_ | 1855034946157019136 |
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| author | Bahamonde, Héctor Alejandro Sánchez-Gómez, David Gyenge, Javier Enrique Peri, Pablo Luis Cellini, Juan Manuel Aranda, Ismael |
| author_browse | Aranda, Ismael Bahamonde, Héctor Alejandro Cellini, Juan Manuel Gyenge, Javier Enrique Peri, Pablo Luis Sánchez-Gómez, David |
| author_facet | Bahamonde, Héctor Alejandro Sánchez-Gómez, David Gyenge, Javier Enrique Peri, Pablo Luis Cellini, Juan Manuel Aranda, Ismael |
| author_sort | Bahamonde, Héctor Alejandro |
| collection | INTA Digital |
| description | Nothofagus antarctica, is the most important species of the silvopastoral systems of southern Patagonia. However, there is limited information on the ecophysiological response mechanisms of seedlings for survival under different resource availability regimes, and whether such processes may differ between provenances. In this study, we evaluated the functional response to water shortage of seedlings of four N. antarctica provenances grown under controlled conditions. After an initial full irrigation period, seedlings were subjected to a water shortage cycle. Measurements of the diameter at the base of the stem, net photosynthesis (An), stomatal conductance to water vapour (gs), predawn water potential (Ψpd), osmotic potential at maximum and zero turgor (Π100; Π0), relative water content at zero turgor (RWC0) and maximum modulus of elasticity (Emax) were carried out during the experimental period. Differences between provenances concerning An and gs rates were recorded under full irrigation conditions, but were not detected in association with drought stress. All provenances had similar osmotic potential values (Π100 and Π0) at full irrigation, but water shortage led to significant osmotic potential differences between provenances. During the whole experimental period, no significant differences on RWC0 and Emax values were recorded among provenances. Under full irrigation conditions, all N. antarctica provenances had a similar physiological performance which suggests that environmental conditions may be the main driver for phenotypic differences in this species. From the osmotic adjustment results gathered, it is derived that a major osmoregulation capacity in response to water shortage is a common feature of all the N. antarctica provenances evaluated. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2343 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA23432019-03-20T15:39:58Z Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage? Bahamonde, Héctor Alejandro Sánchez-Gómez, David Gyenge, Javier Enrique Peri, Pablo Luis Cellini, Juan Manuel Aranda, Ismael Nothofagus Sistemas Silvopascícolas Sostenibilidad Plántulas Agotamiento del Agua Déficit Silvopastoral Systems Sustainability Seedlings Water Depletion Shortages Nothofagus antarctica Sistemas Silvopastoriles Nothofagus antarctica, is the most important species of the silvopastoral systems of southern Patagonia. However, there is limited information on the ecophysiological response mechanisms of seedlings for survival under different resource availability regimes, and whether such processes may differ between provenances. In this study, we evaluated the functional response to water shortage of seedlings of four N. antarctica provenances grown under controlled conditions. After an initial full irrigation period, seedlings were subjected to a water shortage cycle. Measurements of the diameter at the base of the stem, net photosynthesis (An), stomatal conductance to water vapour (gs), predawn water potential (Ψpd), osmotic potential at maximum and zero turgor (Π100; Π0), relative water content at zero turgor (RWC0) and maximum modulus of elasticity (Emax) were carried out during the experimental period. Differences between provenances concerning An and gs rates were recorded under full irrigation conditions, but were not detected in association with drought stress. All provenances had similar osmotic potential values (Π100 and Π0) at full irrigation, but water shortage led to significant osmotic potential differences between provenances. During the whole experimental period, no significant differences on RWC0 and Emax values were recorded among provenances. Under full irrigation conditions, all N. antarctica provenances had a similar physiological performance which suggests that environmental conditions may be the main driver for phenotypic differences in this species. From the osmotic adjustment results gathered, it is derived that a major osmoregulation capacity in response to water shortage is a common feature of all the N. antarctica provenances evaluated. EEA Santa Cruz EEA Balcarce Fil: Bahamonde, Héctor Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentina Fil: Sánchez-Gómez, David. Instituto Nacional de Investigaciones Agrarias y Tecnologías Agroalimentarias (INIA). Centro de Investigación Forestal. Department of Forest Ecology and Genetics; España. Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal de Castilla La Mancha (IRIAF). Centro de Investigación Agroforestal de Albaladejito (CIAF); España Fil: Gyenge, Javier Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil; Argentina Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Cellini, Juan Manuel. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Investigacion en Sistemas Ecologicos y Ambientales; Argentina Fil: Aranda, Ismael. Instituto Nacional de Investigaciones Agrarias y Tecnologías Agroalimentarias (INIA). Centro de Investigación Forestal. Department of Forest Ecology and Genetics; España 2018-05-07T17:30:42Z 2018-05-07T17:30:42Z 2017-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s10457-017-0167-5 http://hdl.handle.net/20.500.12123/2343 0167-4366 1572-9680 https://doi.org/10.1007/s10457-017-0167-5 eng info:eu-repo/semantics/restrictedAccess application/pdf Agroforestry Systems 93 (2) : 689–701 (April 2019) |
| spellingShingle | Nothofagus Sistemas Silvopascícolas Sostenibilidad Plántulas Agotamiento del Agua Déficit Silvopastoral Systems Sustainability Seedlings Water Depletion Shortages Nothofagus antarctica Sistemas Silvopastoriles Bahamonde, Héctor Alejandro Sánchez-Gómez, David Gyenge, Javier Enrique Peri, Pablo Luis Cellini, Juan Manuel Aranda, Ismael Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage? |
| title | Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage? |
| title_full | Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage? |
| title_fullStr | Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage? |
| title_full_unstemmed | Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage? |
| title_short | Thinking in the sustainability of Nothofagus antarctica silvopastoral systems, how differ the responses of seedlings from different provenances to water shortage? |
| title_sort | thinking in the sustainability of nothofagus antarctica silvopastoral systems how differ the responses of seedlings from different provenances to water shortage |
| topic | Nothofagus Sistemas Silvopascícolas Sostenibilidad Plántulas Agotamiento del Agua Déficit Silvopastoral Systems Sustainability Seedlings Water Depletion Shortages Nothofagus antarctica Sistemas Silvopastoriles |
| url | https://link.springer.com/article/10.1007/s10457-017-0167-5 http://hdl.handle.net/20.500.12123/2343 https://doi.org/10.1007/s10457-017-0167-5 |
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